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Selection of Lubricating Grease
The National Lubricating Grease Institute (NLGI) has
developed a symbol (Certification Mark) to aid the
vehicle owner in the proper selection of grease for the
lubrication of wheel bearings and chassis components.
This symbol (an example is shown below) is located on
the grease container and identifies the application and
quality of the grease.
There are two groups
identified, those for wheel
bearings (Letter “G”) and
those for chassis (Letter
“L”) lubrication. Perfor-
mance categories within
these groups result in dual
letter designations for
each group. The letter des-
ignations shown in the ex-
ample are the highest
quality level available and when combined as shown can
be used for both wheel bearing and chassis lubrication.
Use only those greases that have the NLGI symbol on the
container along with the proper quality level for your
application.
Noise Control System Required Maintenance &
Warranty
All vehicles built over 10,000 lbs (4 535 kg) Gross Vehicle
Weight Rating and manufactured for sale and use in the
United States are required to comply with the Federal
Government’s Exterior Noise Regulations. These vehicles
416 MAINTAINING YOUR VEHICLE